National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Logan County Airport (KAAA)

Lat: 40.16°NLon: 89.34°WElev: 591ft.

Fair

38°F

3°C

Humidity 66%
Wind Speed Calm
Barometer 30.13 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 12 Jan 6:15 pm CST
Extended Forecast for

Mc Lean IL

  • Tonight

    Tonight: Partly cloudy, with a low around 33. South southwest wind 7 to 11 mph, with gusts as high as 22 mph.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 51. West wind 11 to 16 mph, with gusts as high as 26 mph.

    High: 51 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 32. Northwest wind 10 to 14 mph, with gusts as high as 24 mph.

    Low: 32 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a temperature falling to around 25 by 5pm. Breezy, with a north northwest wind 16 to 24 mph, with gusts as high as 34 mph.

    High: 33 °F⇓

    Mostly Cloudy
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 14. North northwest wind 11 to 18 mph, with gusts as high as 30 mph.

    Low: 14 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 28. Northwest wind around 10 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.

    High: 28 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 21. South southwest wind 8 to 14 mph, with gusts as high as 22 mph.

    Low: 21 °F

    Chance Snow

  • Friday

    Friday: A 40 percent chance of snow after noon. Mostly cloudy, with a high near 36.

    High: 36 °F

    Cloudy then
    Chance Snow

  • Friday Night

    Friday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 14.

    Low: 14 °F

    Chance Snow
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 33. South southwest wind 7 to 11 mph, with gusts as high as 22 mph.
Tuesday
Partly sunny, with a high near 51. West wind 11 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly cloudy, with a low around 32. Northwest wind 10 to 14 mph, with gusts as high as 24 mph.
Wednesday
Mostly cloudy, with a temperature falling to around 25 by 5pm. Breezy, with a north northwest wind 16 to 24 mph, with gusts as high as 34 mph.
Wednesday Night
Mostly clear, with a low around 14. North northwest wind 11 to 18 mph, with gusts as high as 30 mph.
Thursday
Increasing clouds, with a high near 28. Northwest wind around 10 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 21. South southwest wind 8 to 14 mph, with gusts as high as 22 mph.
Friday
A 40 percent chance of snow after noon. Mostly cloudy, with a high near 36.
Friday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 14.
Saturday
A 30 percent chance of snow after noon. Mostly cloudy, with a high near 20.
Saturday Night
Mostly cloudy, with a low around 5.
Sunday
Partly sunny, with a high near 18.
Sunday Night
Partly cloudy, with a low around 8.
M.L.King Day
Mostly sunny, with a high near 26.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mc Lean IL
 40.31°N 89.2°W (Elev. 699 ft)
Last Update:
5:36 pm CST Jan 12, 2026
Forecast Valid:
6pm CST Jan 12, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation